(19)
(11) EP 4 235 945 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
18.10.2023 Bulletin 2023/42

(43) Date of publication A2:
30.08.2023 Bulletin 2023/35

(21) Application number: 23177520.6

(22) Date of filing: 28.12.2020
(51) International Patent Classification (IPC): 
H01M 10/04(2006.01)
H01M 50/153(2021.01)
H01M 50/536(2021.01)
H01M 50/166(2021.01)
H01M 50/636(2021.01)
 H01M 50/109(2021.01)
H01M 50/183(2021.01)
H01M 50/627(2021.01)
H01M 50/559(2021.01)
(52) Cooperative Patent Classification (CPC):
H01M 50/109; H01M 50/141; H01M 50/181; H01M 50/153; H01M 50/183; H01M 50/536; H01M 10/0427; H01M 10/0431; H01M 50/166; H01M 50/559; H01M 50/636; Y02E 60/10; Y02P 70/50
(84) Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

(30) Priority: 03.06.2020 CN 202010496417
08.07.2020 CN 202021331670 U

(62) Application number of the earlier application in accordance with Art. 76 EPC:
20217378.7 / 3920298

(71) Applicant: Zhuhai CosMX Battery Co., Ltd.
Zhuhai, Guangdong 519100 (CN)

(72) Inventors:
  • PENG, Ning
    Zhuhai, 519100 (CN)
  • XIE, Bin
    Zhuhai, 519100 (CN)

(74) Representative: Studio Torta S.p.A. 
Via Viotti, 9
10121 Torino
10121 Torino (IT)

   


(54) BUTTON CELL AND ELECTRONIC DEVICE


(57) The present disclosure provides a button cell and an electronic device. In the button cell, a conductive member covers an opening of a top cover, and the top cover is connected to the conductive member. A cell is placed in an accommodating cavity of a bottom shell. A first tab is welded to an inner bottom wall of the bottom shell, and then the top cover having the conductive member is connected to the bottom shell in a sealed manner, with a second tab on the cell being electrically connected to the conductive member. Finally, an electrolyte solution is injected into the accommodating cavity. After the electrolyte solution is injected, a sealing member covers the liquid injection port, and the sealing member is connected to the liquid injection port in a sealed manner.







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